Field



March 14, 1933. J BUSHNELL ET AL Re. 18,764

CONCRETE MIXING AND DISTRIBUTING APPARATUS Original Filed June 16. 1928 E I 8 INVENTORS G B Y ATTORNEY UNITED STATES" v: Theimprovements relate in general to'ap- Reissued Mar. 14, 1 933 PATENT oFFIca I JAMESE. BUSHNELL; OF NORTH PLAINFIELD, AND JOSEPH O. LUKAGHOVIC, OF PLA IN- IIELD, NEW JERSEY ASSIGNOBS' TO RANSOME CONCRETE MACHINERY COMPANY,

' OF PLAINFIELD', NEW JERSEY, A CORPORATION OF NEW JERSEY I r CONCRETE urxrlvc AND ms'rana'urnvc APPARATUS:

Original raj- ,796,282,. datediK arch 17,1931, Serial No. 286,032, med June 16,1928. Application for I reissue filed October. 31,1931. Serial No. 572,416.

paratus for mixing and placing. freshly mixed'concrete and more particularly to a gravity distribution means therefor in'association with a portable mixer.

' The present improvements have astheir primar'y'object, among others, the provision of a mixing and distributing unit for con crete andother flowable materials, adaptedto be readily positioned for use or knocked down-for travel, entailing a minimum of time and labor. A further object isto provide a portable mast plant in combination with a mixing unit therefor embodying a novel meansand method of erecting'and lowering the former. A still further object resides in the provision of a unitary structure for accomplishing the foregoing purposes, embodying a minimum of parts, all of which contribute to the efiicient functioning of the unit under all conditions of use.

Other objects and advantages will be apparent upon reference'to the accompanying description and drawing in which 'Fi l'is a side elevation of a p'aver unit embed in the present improvements, parts being ro en away and others in dotted line positions; v p

Fig. 2 is a fragment of the mast taken at right angles to the showing of Fig. 1.

The illustrated embodiment/comprises a paver unit including a traction means 5, mixer frame 6, mixing drum 7, pivoted charging skip 8, and discharge chute 9, all operated by gears, clutches (not shown), etc. through a suitable power means conventionally indicated at 10A mounted on the frame. The operation of the foregoing parts is well known. The dry aggregates, sand, cement, etcgare loaded on t vated by power cable 10'to dotted line position A, thereby discharging the ingredients into mixer 7 there to bemixed for a predetermined interval with a suitable quantity of e skip 8, which is elea vertically moving bucket 12, adapted to" receive the discharge from mixer 7 by chute 9. Cable 13 extendin oversheaves on bracket 14 and down to the power means serves to elevate'the bucket along the mast to the desired height, where it automatically discharges its contents to suitablechutes," etc., whence the concrete is conveyed under the in-- fluence of gravity to the point of placement.

The bucket 12 may then be loweredto receive a new charge and the operation repeated as is well known in this type. of apparatus. A bumper 12is provided for the bucket, as illustrated.

IDetails of the mast and bucket will notbe specifically described here, as same maybe of any suitable construction. That chosen for illustration however is of the type set forth in United States Letters Patent to James E;Bushnell, No. 1,645,942, issued 00- tober 18, 1927, and to John P. F aber,.No. 1,812,328, issued June 30, 1931 Mounted-adjacent the forward end of'the mixerframe, is a supporting member or base 15,, suitably braced to withstand stresses and strains. Two such members are provided, one on each side of the frame 6, and form with saidframe, a cradle in which the reclined mast 11 may be disposed as hereinafter described. As illustrated, a cross brace 17 is fixed to the mast ll-adj acent the upper limit thereof, said brace having pivotally connect-' ed thereto at 18, the upper ends of struts or braces 16. When the unit is in operative position, shown in full lines in Fig; 1, the lower ends of these struts are remo-vablyanchored at 19 to the supporting members aforementioned, whereby the mast is steadied and braced during use. Suitable jacks 20 are pro vided at the lower rear portion of frame 6 for supporting and steadying the mast and frame when in use, but may be raised from the ground and carried when the paver is prepared for travel. p

The struts 16 are of collapsible or telescopic nov construction for a purpose hereinafter set passing through registering apertures in the telescopic sections.

The mast 11 is'pivoted at 21 to the frame 6, or a prolongation of the mast fixedto said frame, and is adapted to be moved thereabout y to full lineposition andf'vice .versa=,'-either' manually or by applying power to cable '24;

A suitablestop is provided for the'bridge 23 to prevent. same from swinging in a com) ter clockwise direction, beyond the full line position illustrated. The forward end of the skip 8 is provided with an attaching means for the lower end of struts 16 for m nected therefrom or vided,one on'each side ofth'eskip; s V 1 i use nnder predetermined conditions as hereinafter described-twosuch vmeans being pro When arranged for traveling, the mastlf isdispo'sed in the horizontal position (dotted line Y), theU-shaped bridge 23 being down in dotted line position so that-the mast is disposed between the legs thereof as well-asbe'tween supports. 15 and rests on buiier or support 26. The'struts '16 are telescoped as shown and: are disposed bet-ween the reclin ing mast and the skip-J If it; is found desirable to elevate the skip to a'hi'gher' position during transit, the struts '16 may be disc'om from the mast,to permit suchmovement, Upon arrival of the unit at the field of operation, the apparatus may be speedily set up for work, andzno delay need be. encouns.

tiered while a separate mast "plant is being erected,- sincethe paver unit carries its vown mast and erecting means. In accomplishing the erection of the mast, the skip Sis placedinits lowermost posit on with the telescoped struts 16 attached to the parts 250i the skip and thebrace 17 of thereclined mast, as: il; lustrated dotted lines. Power is then ap? plied to the skip cableflO a'ndthe skip raised to an. intermediate position indicated by dotted lines B, and the mast 11 being raised (by means of struts 16) in a corresponding arc about; itspivot 21 tothe dotted line position this position has, been reached the U-shaped bridge 23 is swung in a counter clockwise direction about its pivot on'sup ports 15 until it reaches full line position where it is bolted and assumes the osition of an inverted U, thereby forming abridge r sup ort upon hich m st 11 may be held in its oblique position X. Cable 24, provided nected f rom the skip, swung with a turnbuckle, may then be anchored to the frame, as illustrated, for steadying the bridge 23. a v v,

Cable -10 is now paiddout, permitting skip St return to lowermost position carrying with it the lower sections of the telescopic struts, while the iipper section's thereer re main secured "to mastllwhicli is. held in pOsition- X by bridge- 23. The "struts 1B "are a r n y ext nded, by thi Op as illustrated-in dmtediinea'and pin 40 is now inserted in the registering apertures in the sections at th sls'tage ofthe erection of the mast, skip8'i's in lowermost position, mast 11 isinaoblique position-X and the extended struts-16 form-ri idconnections between the skip andmast, {Elie final step in th eerectio n is nowa'ccomplished by elevatingthe sk p 8, by cable 10, to dotted line position A, whereby, .(by means ofstrnts lfi the mastll is raised, about its piv ot 21 'ir or n position X, to full line 1 vertical ,positipn when the plates 22 are bolted to the mast for. holding same The lowerendsof struts 16 are now disconownwardly and anchored'at 19 to supports 15 where g theyeiremain to brace the mast dur ng use;

TheskipB is thenlowered to lowermost po sition a ndth fe unit is ready for use The securing. means :25 may take any suitable form, may; b mounted 1 in anyponvenient osition I on the skip and arereadily remove e therefrom afterthe mastis erected. I v

W it s si ed is nge the un t for transit, thetmast islowererlirony vertical position byfollowing the above described stepsi-r'ireverse order. The skip-8 is raised toand held in position A bycable 10-, and the lower ends of struts 36 are disconnected atlQand secured to the ski" at 2 x Fa ten n p t s 22M r v- 1 0 and the skip 8 lowered by cable 10 to lowermost positioncarrying with itstruts 16 which in turn swing mastl-labout i'vot Q1 to'dotted line posit-i911. -Xi If br-iifge 23 is not in up h 51 1111 p o ii i .8 ms t su h 'p s i e o swim n eet l As the st rruts lfi are in extended position, pins 40 are removed there/{remand the struts colp ed er e e a p byv elevating ips to dotted line posit on Support 23 is now removed from under mast 1-1 and the skip lowered (supporting themast) to lowermost v position whereby ast is disposed in horizontalpositionmesting onsupport 26. The unitis now-againadapted i ortransit.

It is; apparentjrom the foregoing descrip-j tion, that a. portable, construction unit has been; clesignedembodying a combined mixer and gravity distributionv means which .is adapted to be set up iorknocked dowii in a minimum time and by the employment of but af fe'w laborers accomplishing the tore oing resultfit' will be'j 'o't'ed that novel mast ercting'and lowering methods are practical utilizing means for accomplishing the methods, which means perform functions aside from that of operating the mast; Nocumbcrsome parts. have been added to thepres ent improvements in attaining the novel con struction, which will be idle or interfere with the normal operation of the plant. Accordingly the struts 16 and skip 8 after serving as a hoisting means for the mast, respectively brace the mast and load the mixer, and serve in such capacities until again called upon to lower the mast to traveling position.

Various modifications within the purview of the present improvements will be apparent to those skilled in the art and may be made without departing from the scope of the invention.

We claim:

1. In a mixing and distributing unit comprising a base member, a charging skip and distributing mast movably mounted on'said base for movement relative therewith, and means cooperating between said skip and mast for erecting and lowering said mast.

2. In a mixing and distributing unit comprising a mixer and a base member, a charging skip for said mixer positioned on said member, a distributing mast pivotally mounted on said base member and means cooperating between said skip and mast for erecting or lowering said mast.

3. In a mixing and distributing unit a base member, a charging skip positioned on said member, a distributing mast pivotally mounted on said base member, means normally bracing said mast in erect position, said means being releasable for attachment with said skip to cooperate in erecting and lowering said mast, and means for attaching said bracing means to the skip.

4. In a device of the character described having a base, a mixer and charging skip mounted thereon, the combination with a distributing mast movably mounted on said base, a collapsible brace, said mast being normally held in erect position by said brace and means on said ski adapted to receive one end of said brace wiiereby said skip may lower said mast to inoperative position.

*5. In a portable mixing device, a base, a charging skip mounted on said base, a mast pivotally mounted on said base, and a telescopic brace adapted to be connected to said mast and skip whereby movements of said skip may be imparted to said mast for raising and lowering same.

6. In a portable mixing device, a base, a charging skip mounted thereon, a distributing mast movably mounted on said base, bracing means fixed to said mast and removably connected with said base for holding said mast in erect position and means on said skip adapted to support one end of said bracing means whereby said skip may-lower said mast vto inoperative position. p

7. In.- a mixing device, asbase, a charging skip mounted thereon, aa-ndistributing mast movably mounted on.saidbase,-means on said skip adapted to support a rigid member and a rigid member adapted to connect said mast and said means, for supportingthe mast during travel from upper to lower positions and v1ceversa.. 1 x V f 8.- In a paver unit includinga mixer, and

a pivotally mounted-.mast= and skip, the

method of raisingsaid mastirom' horizontal to vertical position comprisingkconnecting said mast and skip with a telescopic. strut, raisingthe skip to an intermediateposition,

supporting .the mast in 'such intermediate,

positioigdiste'nding the strut by lowering the skip, securin the strut in distended position,

raising the s ip until the mast is erect, disconnectingthe-strut from,,the skip and;

anchoring-same on the-paver.- v

9. In a paverunit including a mixer, a pivoted skip therefor and a pivotally. mounted mastsupported in vertical position by a distended telescopic strut, the method of lowering the mast to horizontal position comprising raising theskip to elevated position,

a material hoist pivotally mountedadjacent,

said mast, and means for operatively connecting. said mast and hoist for imparting movement of, the latter to the former whereby said mast may be elevated and lowered under theinfluence of pivotal movements of said hoist.- -1 1. In a paver unit, the combinationvof a pivoted mast, a pivoted material hoist and means cooperating vbetween said mast and hoist whereby movements of the latter influence movements of the former. 12. Ina portable mixing device, a base, a charging skip mounted on said base, a mast pivotally mounted on said base for movement from reclining to vertical positions, and means for r'aisin'g saidmast from reclined to vertical position by elevation of said skip comprising a brace connected with said mast and detachably secured to said skip. "13. In a'p'orta'ble mixing and distributing unit, the combination of -a base; a mast and a material hoist "pivotally mounted thereon, a mixing drum mounted on said base, power actuated means for operating'the said hoist and drum; and a movable rigid member connected to the mast for effecting raising and lowering 'thereof,':said-member being operatively associated fivith ihe powe'rvmems for mnt froin said p'owermeans to oneo'fsaid deriving movement slid v 144111 a pol-tame miiing an distributifig Wei-means; membere 7 Witness our hahde this daj of Octetunit, the eombi'm'tion 0ft biseg a ms'st pi'v bevy-1931,- county bf Middlesex, State oiNe-w otally mounted thereon, 1 'a-"mixingfdrnm Jersey;

mounted 'onqsai d base, a power unit, for in parting movement to said'drum, a: piyetelement associated with said base, emember 'rotatable abeut sa i'd pivot byamovement derivedfrom said power unit; andmeans connectablia with said mastandiwith said member forelevatingjaifid lowering said mast.

WJ b Mdeemin unit, the'eombinatibn of a base; a must and a mixing drum mounted therebn powerixc tuated means for operating the saidfidi'um and means coo erating between said. mast and:

power menu's #hereby the lhtte'rinflueiices movements-of the-former, said cooyerating meansincludingm connectingmrember Se cured to the mast 'aii'd 'ie'm'ovably .conneeted with the base, said membenbeingremovable from said baseand being opemtively associated with the power means foideriving movement from said power means, and means for securing s'aid connecting member in fixed relation to the base after the mast has'been moved to uprightpositien. :1

16.;The cembin'atfh of a basestn'lcturq traction means -upbn which said basevi's mounted, power fQr Operating s'aid tractionmehns, a mast mounted on we base structure adapted.x to-be raised and lowered; a material elevating bueket mounted to ti'a'Yelalong said mast, a pivotal connection between said mast and the u per 'portibn of-said'buse structurefor a fl'or ing movement of said mast to recliningposition 'over said structure, a mixing. drum mounted on said base structure and operated by powe'l means, mechanismiimludinga pivoted mem her, for imparting movement to said mast, dispesed between said power meansand mast, and means .011 seid base structurefer supporting said mast in raised 1nd in lgiwered positib'ns on ssid' base st'tucture. I 5

17. The combination of a base structure; tractieil means upen which said Basi 'igS mounted, ower means 'fbr' ejiefati'hg" -ifid ti-a'ction 'me'al'ns, a mist meuntedbn 'sai'd base structure adapted. t6 be raised and loivefed', a material elevatihg b'ueket mounted te ti a-izel ng 'fs d ma a pi o ecten b e -en said ma t and, the pper ortion v"of said base struemre for 'afiording moveme mr said mast to reclining pdsitien oyegl fsaid structure, a mixi "drum; said base strueture en pperated byfsaid power means, mechanism jfor impartigg movement to said mad; including aqmemberpivotally mounted. on said base structure; alseeond member pivotlilly attanhed tdsaid= mist; a. releasable 'conne'ctin between saifl' members,

and trendsitsionmleulHim:impartingv;

. JAMES n BIi-sHNELL v JOSEPHEC. LUKAGHOVIG.

res. 

